How does one learn arg0 in csh

Article View: comp.unix.shell

Article #1846

#1846

From: John Ruckstuhl
Date: Wed, 28 Nov 1990 04:44

21 lines
1234 bytes

I'd like to test if a csh is a login shell in ~/.cshrc.  In a Bourne
shell, I can look at $0 and see "-sh" , but in csh, $0 substitutes "the 
name of the file from which command input is being read" which is an
error in an interactive csh.

"login" documentation says: Argument 0 of the command interpreter is the
name of the command interpreter with a leading dash ('-') prepended.

I am aware that if the csh !is! the login shell, then ~/.login will be 
sourced.

I am using the csh shipped with SunOS 4.1 on SPARCStation1+'s.
"what `which csh`" shows a lot of revision info -- perhaps this line
identifies the version sufficiently:
        sh.c 1.22 89/05/22 SMI; from UCB 5.3 3/29/86

Thank you for your comments,
ruck
--
John R Ruckstuhl, Jr
University of Florida		ruck@cis.ufl.edu, uflorida!ruck

Technical Details

Message-ID: <25611@uflorida.cis.ufl.EDU>

Path:

arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!uflorida!reef.cis.ufl.edu!ruck

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!uflorida!reef.cis.ufl.edu!ruck
From: ruck@reef.cis.ufl.edu (John Ruckstuhl)
Newsgroups: comp.unix.shell
Subject: How does one learn arg0 in csh
Message-ID: <25611@uflorida.cis.ufl.EDU>
Date: 28 Nov 90 04:44:29 GMT
Sender: news@uflorida.cis.ufl.EDU
Organization: UF CIS Dept.
Lines: 21